參數(shù)資料
型號(hào)： MAX1680
廠商： Maxim Integrated Products, Inc.
英文描述： 125mA, Frequency-Selectable, Switched-Capacitor Voltage Converters
中文描述： 125mA、頻率可選、開(kāi)關(guān)電容電壓變換器
文件頁(yè)數(shù)： 1/12頁(yè)
文件大?。?/td> 103K
代理商： MAX1680
_______________General Desc ription
The MAX1680/MAX1681 inductorless switched-capaci-
tor voltage converters either invert an input voltage of
+2.0V to +5.5V or double it while supplying up to
125mA output current. They have a selectable-frequen-
cy option that allows the use of small capacitors: 4.7μF
(MAX1680), 1μF (MAX1681). With their high output cur-
rent capability, these charge-pump devices are suit-
able replacements for inductor-based regulators, which
require more expensive external components and addi-
tional board space.
The devices’ equivalent output resistance (typically
3.5
) allows them to deliver as much as 125mA with
only a 440mV drop. A shutdown feature reduces quies-
cent current to less than 1μA. The MAX1680/MAX1681
are available in 8-pin SO packages. For devices that
deliver up to 50mA in smaller μMAX packages, refer to
the MAX860/MAX861 data sheet.
________________________Applic ations
Local Negative Supplies
Interface Power Supplies
Op-Amp Power Supplies
MOSFET Bias
____________________________Features
o
Selectable Switching Frequencies:
125kHz/250kHz (MAX1680)
500kHz/1MHz (MAX1681)
o
Allow Use of Small Capacitors
(1μF for the MAX1681)
o
125mA Output Current
o
3.5
Output Impedance
o
1μA Logic-Controlled Shutdown
o
Configurable as Voltage Inverters or Doublers
o
+2.0V to +5.5V Input Voltage Range
o
Available in 8-Pin SO Packages
o
90% Efficiency
M
125mA, Frequenc y-S elec table,
S witc hed-Capac itor Voltage Converters
________________________________________________________________ Maxim Integrated Products
1
MAX1681
GND
FSEL
IN
CAP+
SHDN
C1
1
μ
F
+V
INPUT
+3V TO+5.5V
INVERTED
OUTPUT
VOLTAGE
C2
1
μ
F
1
μ
F
LV
CAP-
INVERTER CONFIGURATION
OUT
MAX1681
FSEL
IN
CAP+
SHDN
GND
C1
1
μ
F
C2
1
μ
F
DOUBLED
OUTPUT
VOLTAGE
+V
INPUT
+4V TO+5.5V
NOTE: USE 4.7
μ
F CAPACITORS FOR MAX1680
INPUT VOLTAGE RANGE: +2.5V TO+5.5V.
NOTE: USE 4.7
μ
F CAPACITORS FOR MAX1680
INPUT VOLTAGE RANGE: +2.0V TO+5.5V.
1
μ
F
LV
CAP-
DOUBLER CONFIGURATION
OUT
__________________________________________________Typic al Operating Circ uits
19-1247; Rev 0; 7/97
PART
MAX1680
C/D
MAX1680ESA
MAX1681
C/D
MAX1681ESA
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
TEMP. RANGE
PIN-PACKAGE
Dice*
8 SO
Dice*
8 SO
______________Ordering Information
*Contact factory for dice specifications.
Pin Configuration appears at end of data sheet.
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
相關(guān)PDF資料
PDF描述
MAX1680ESA 125mA, Frequency-Selectable, Switched-Capacitor Voltage Converters
MAX1681ESA 125mA, Frequency-Selectable, Switched-Capacitor Voltage Converters
MAX1682EUK-T Switched-Capacitor Voltage Doublers
MAX1682-MAX1683 Switched-Capacitor Voltage Doublers
MAX1683EUK-T Switched-Capacitor Voltage Doublers
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MAX16800ATE/V+T 功能描述:LED照明驅(qū)動(dòng)器 350mA Adj Linear HB LED Driver RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N
MAX16800ATE+ 功能描述:LED照明驅(qū)動(dòng)器 350mA Adj Linear HB LED Driver RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N
MAX16800ATE+T 功能描述:LED照明驅(qū)動(dòng)器 350mA Adj Linear HB LED Driver RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N
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